A compamy from Oregon that manufactures high-end audio analog and digital interconnects, speaker and power cables, and computer cables. They sell primarily to end users over the Internet. They also recently started modifying audio components. Their modifications include improving power delivery, signal paths and digital circuitry where applicable. They modify mostly DVD & CD players, DACs and solid-state amplifiers.

A compamy that build tube electronics, offers modification services to upgrade and enhance virtually any tube audio equipment, does custom designs and is the factory authorized agent for assembly of all Bottlehead products.